The San Francisco 49ers have lost second year defensive tackle Arik Armstead to a shoulder injury. He suffered the injury in the third quarter, and has been announced as questionable to return. Glenn Dorsey is inactive due to his 2015 knee injury, which means Ronald Blair and Tony Jerod-Eddie are likely to get more playing time.
Armstead suffered a shoulder injury early in training camp, and did not get any preseason snaps. He has been active each week since the start of the season, but he acknowledged the shoulder would be a problem all season. He said the focus was on maintenance, but acknowledged surgery might eventually be necessary.